Steam-boiler



(No Model.) 2 Sheets-Sheet 1. J. G. TITUS.

STEAM BBOIL'ER. No. 273,640. 5 Patented Mar.6,1883. OOOOOQOOOOOOOOOOOOOQIra/are r), a-f.

(No Model.) 2 Sheets-Sheet 2.

J. G. TITUS.

STEAM, iOILER. v No. 273,640. Patented Mar.6,1883.

IF 3, J.

UNITED STATES PATENT OFFICE.

JOHI C. TITUS, OF MARION, OHIO.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 273,640, dated March 6,1883.

Application filed March 16,1882. (N0 model.)

To all whom it may concern:

Be it known that I, JOHN (J. TITUS, of Marion, in thecounty of Marion,and in the State of Ohio, have invented certain new and usefullmprovementsinSteam-Boilers; and Idohereby declare that the following isa full, clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,makinga part of this specification, in which- Figure l is a front endelevation of my improved steam-boiler with one lid of the smokeboxraised to expose the return-lines. Fig. 2 is a vertical cross-sectionthrough the boiler, taken in the plane indicated by dotted linesw a,Figs. 3 and 4. Fig. 3 is a diametrical section through the boiler in thevertical plane indicated by dotted lines 1 g on Fig. 1. Fig. 4 is a sideelevation of the boiler.

Similar letters of reference indicate corresponding parts.

This invention relates to an improvement on steam-boilers which arespecially designed for portable engines, steam-tugs, and the like, butwhich is also useful for road or farm locomotives haviugboilersofthekinddenominated return-flue boilers.

My invention relates to steam-boilers of the horizontal or return-fluekind; and the nature of my invention consistsin certain novel features,which will be fullyuuderstood from the following description, when takenin connection with the annexed drawings.

A designates the dome or vertical section of the boiler, and B thehorizontal portion or body of the boiler.

The letter G designates a series of two or more vertical stays or braceshaving a firm and strong connnection with the crown-sheet ot' the domeAand with the boiler, the function of which is to insure a reliable andunyielding union between the dome and boiler. The said stays or bracesare connected with the crown of the dome or chamber A by means ofthetransverse bars A, which are themselves riveted to the crown.

B designates the main fire-flue and combustion-chamber, in which is thegrate B 0 G are the return fire-fines; D, the smokebox orcombustion-chamber at the end of the boiler, through which the productspass on their way to the return-fines, which latter pass forward andcommunicate with the uptake E,

as indicated by the course of the arrows on Fig. 3.

As ordinarily constructed the water-line in this class of horizontalsteam-boilers is a short distance above the crown of the main fire-flueB, and the small dome on the top ofthe boilershell is used exclusivelyfor. receiving the steam.

The advantages of a boiler constructed substantially in the manner abovedescribed are I to raise the water-line above the horizontal part B ofthe boiler into the vertical part A thereof, so that as either end ofthe boiler is raised or lowered, as in going up or down grade, no partof the fire-surlace is left bare of water. I thus avoid the danger ofoverheating'any part, and consequently there will be no tendency toexplosion from softening of plates and over-pressure.

It is obvious that by raising the water-line above the highest point ofthe section B a larger number of return-fines, U, can he arranged in theboiler, and the heating capacity thereof greatly augmented.

By arranging the tines as shown and extending the water-line up into theenlarged dome A a larger body of water can be carried in a boiler ofagiven size to absorb and retain the heat than can be carried in thewell-known return'flue boilers.

lf desired, three or more of the return-fines (marked 0 in Fig. 2) maybe omitted from one or both sides of the boiler, for the purpose ofinsuring better circulation.

Having described my invention, I claim- The combination, in asteam-boiler, of the outer shell having its upper portion perforated andprovided with a cylindrical water-chamher having strengthening-barsattached to its crown and united to the shell by rivets and braces orstays, with the inner shell secured to the outer and provided withgrate-bars located therein, and return-fines running therethrough andcommunicating with the uptake, substantially as shown and described.

ln testimony whereof I afiix my signature, in presence of two witnesses,this 5th day of December, 1881.

JOHN C. TI'IUS.

Witnesses:

J OHN E. DAVIDS, LIBBIE M. DAVIDS.

